Amazon offers Prime members the Diablo II Battle Chest for Windows and Mac for $9.99 with free shipping. (Non-members can spend $35 to bag free shipping; otherwise, it adds $4.98.) That's the lowest total price we could find by $16. It includes Diablo II, Diablo II: Lord of Destruction Expansion Set, and the Diablo II Official Strategy Guide.

Note that this item is currently out of stock, but it can be ordered at this price for delivery when available. Deal ends June 13.